Stool



FIG. 1 is a perspective view of a stool showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 a bottom view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a back elevational view thereof. 

The ornamental design for a “stool,” as shown. 